Home / 88,145.57-121,640.89-47,859.36

Finding the Fourth Proportional to 88,145.57, 121,640.89 and 47,859.36

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Solution

The fourth proportional to 88,145.57, 121,640.89 and 47,859.36 is: 66,045.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,145.57 : 121,640.89 = 47,859.36 : x
  2. Step 2: Convert to fraction form
    88,145.57/121,640.89 = 47,859.36/x
  3. Step 3: Cross multiply
    88,145.57x = 121,640.89 × 47,859.36
  4. Step 4: Simplify right side
    88,145.57x = 5,821,654,659.16
  5. Step 5: Solve for x
    x = 5,821,654,659.16/88,145.57
  6. Step 6: Final answer
    x = 66,045.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.